Paper dispenser

ABSTRACT

A paper dispenser includes a base, paper dispensing portion and cover. The paper dispensing portion has two support members and a paper dispensing unit. The paper dispensing unit has an auxiliary roller, paper dispensing roller, swing unit and paper dispensing cutter disposed at the swing unit. The paper dispensing cutter swings between the inside and outside of a receiving groove of the paper dispensing roller. The support members each have a roll resilient positioning unit, arcuate pivotal connection unit and cam guide groove surrounding the pivotal connection unit and being closed. Two sides of the paper dispensing roller are pivotally disposed at one end of the pivotal connection unit. The guide unit is movably disposed at the cam guide groove. The cover is pivotally disposed at the base and has a paper discharge hole. The paper dispensing portion is disposed between the cover and base.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to paper dispensers, and in particular toa paper dispenser having a paper dispensing roller and a paperdispensing cutter integrated into the paper dispensing roller to reducethe volume of the paper dispenser.

2. Description of the Related Art

Paper dispensers each contain continuous paper wrapped around a reel anddispense the paper of a constant length to users. However, aconventional paper dispenser comprises a paper dispensing roller and apaper dispensing cutter disposed outside the paper dispensing roller tocut the continuous paper, so as to dispense the paper of a constantlength. As a result, the paper dispensing cutter and paper dispensingroller of the conventional paper dispenser take up much space and thusrender the conventional paper dispenser bulky.

BRIEF SUMMARY OF THE INVENTION

An objective of the present disclosure is to provide a paper dispenserwith a paper dispensing roller and a paper dispensing cutter integratedinto the paper dispensing roller to reduce the volume of the paperdispenser.

To achieve at least the above objective, the present disclosure providesa paper dispenser comprising a base, a paper dispensing portion and acover. The paper dispensing portion has two support members and a paperdispensing unit, the paper dispensing unit having at least an auxiliaryroller, a paper dispensing roller, a swing unit and a paper dispensingcutter, wherein the auxiliary roller and the paper dispensing rollerpress against each other to deliver a roll of a paper, the paperdispensing roller having a receiving groove, the swing unit having twoswing arms and a cutter holder, wherein two ends of the swing arms havea pivotal connection unit and a guide unit, respectively, wherein twosides of the cutter holder are disposed at the swing arms, respectively,and disposed between the pivotal connection unit and the guide unit ofeach swing arm, wherein the paper dispensing cutter is disposed at thecutter holder, wherein the pivotal connection units of the swing armsare pivotally disposed on two sides of the paper dispensing roller,respectively, and disposed on the same side of the receiving groove,wherein the paper dispensing cutter swings between the inside andoutside of the receiving groove, wherein the support members each have aroll resilient positioning unit, a pivotal connection unit and a camguide groove. The pivotal connection units of the support members arearcuate, the cam guide groove surrounds the pivotal connection units ofthe support members and is closed. The two sides of the paper dispensingroller are pivotally disposed at the same end of the pivotal connectionunits of the support members. The guide units of the swing arms aremovably disposed at the cam guide grooves of the support members. Theauxiliary roller is pivotally disposed between the support members. Thesupport members are pivotally disposed at the base. The cover isdisposed at the base and has a paper discharge hole. The cover coversthe base. The paper dispensing portion is disposed between the cover andthe base.

In an embodiment, a side of the cover is pivotally disposed on a side ofthe base by two damping axles, and a side of each said support member ispivotally disposed on an opposing side of the base by a damping axle,wherein the cover and the paper dispensing portion rotate in oppositedirections, wherein another side of the cover has an engaging unitengaged with an engaging unit on another side of the base, whereinanother side of each said support member has an engaging unit engagedwith an engaging unit of the base.

In an embodiment, one of the support members has an electricalprocessing unit, a driving portion and a power supply unit, with thedriving portion having a driving unit, a transmission unit and aunidirectional gear, with the power supply unit being electricallyconnected to the electrical processing unit, with the electricalprocessing unit being electrically connected to the driving unit, withthe driving unit being connected to the transmission unit, with thetransmission unit being connected to the unidirectional gear, with theunidirectional gear being connected to the paper dispensing roller,wherein the driving unit drives, through the transmission unit and theunidirectional gear, the paper dispensing roller to rotate in adirection of outputting the paper out of the paper discharge hole.

In an embodiment, the unidirectional gear is connected to a magneticswitch rotational member, wherein two ends of the magnetic switchrotational member each have a magnetic member, with the electricalprocessing unit having a magnetic sensing unit corresponding in positionto one of the magnetic members.

In an embodiment, the unidirectional gear is connected to amanually-operated rotational member exposed from the support members andthe cover.

In an embodiment, the electrical processing unit has an infrared sensingunit, and the cover has a light-penetrable board, allowing the infraredsensing unit to sense a human hand through the light-penetrable board.

In an embodiment, the electrical processing unit has a paper inadequacyinforming unit having a roll detection unit, a link unit and a liftswitch, with the roll detection unit resiliently pivotally disposed atthe support members and having a driving hollow, with the link unithaving two ends flanking pivotally the support members, wherein the linkunit has an end movably connected to the driving hollow and another endconnected to the lift switch.

In an embodiment, one of the support members has an auxiliary drivingportion having a gear, a stop arm and a resilient unit, with the gearbeing connected to the paper dispensing roller and having a plurality ofbevel gears and a pivotal connection unit, wherein two ends of theresilient unit are disposed at the pivotal connection unit and thesupport members of the gear, respectively, where two ends of the stoparm have a stop end and a resilient pivotal connection unit,respectively, wherein the resilient pivotal connection unit is pivotallydisposed at the support members to drive the stop end stopping betweenthe bevel gears, and thus the paper dispensing roller rotates in adirection of outputting the paper out of the paper discharge hole.

In an embodiment, two sides of the paper dispensing roller have apivotal connection unit and a fixing frame, respectively, wherein thepivotal connection unit of the paper dispensing roller is on the sameside as the receiving groove, wherein the pivotal connection units ofthe swing arms are pivotally disposed at the pivotal connection units ofthe paper dispensing roller and positioned in place by the fixing frame.

In an embodiment, the paper dispensing portion has a cover and apositioning frame. The cover and the positioning frame are disposedbetween the support members. The auxiliary roller and the paperdispensing roller are disposed at the positioning frame. The cover is onthe front side of the paper dispensing roller. The cover has anauxiliary roller. The auxiliary roller and the paper dispensing rollerpress against each other to deliver the paper.

Therefore, the paper dispenser of the present disclosure integrates apaper dispensing cutter into a paper dispensing roller to reduce thevolume of the paper dispenser.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a paper dispenser opened according to anembodiment of the present disclosure.

FIG. 2 is a schematic view of the paper dispenser covered according toan embodiment of the present disclosure.

FIG. 3 is a schematic view of the paper dispenser taken from anotherangle of view and shown in FIG. 2 .

FIG. 4 is an exploded view of the paper dispenser according to anembodiment of the present disclosure.

FIG. 5 is a schematic view of a paper dispensing portion taken fromanother angle of view and shown in FIG. 4 .

FIG. 6 is a cutaway view 1 of the paper dispensing portion according toan embodiment of the present disclosure.

FIG. 7 is a schematic view of a paper inadequacy informing unitaccording to an embodiment of the present disclosure.

FIG. 8 is a cutaway view 2 of the paper dispensing portion according toan embodiment of the present disclosure.

FIG. 9 is an exploded view 1 of the paper dispensing portion accordingto an embodiment of the present disclosure.

FIG. 10 is an exploded view 2 of the paper dispensing portion accordingto an embodiment of the present disclosure.

FIG. 11 is an exploded view 3 of the paper dispensing portion accordingto an embodiment of the present disclosure.

FIG. 12 is a schematic view of operation of a paper dispensing cutter ofa paper dispensing roller according to an embodiment of the presentdisclosure.

FIG. 13 is a schematic view of operation of a paper dispensing cutter ofa paper dispensing roller taken from another angle of view and shown inFIG. 11 .

FIG. 14 is a cross-sectional view of the paper dispensing cutter beforeoperation according to an embodiment of the present disclosure.

FIG. 15 is a cross-sectional view of the paper dispensing cutter afteroperation according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

To facilitate understanding of the object, characteristics and effectsof this present disclosure, embodiments together with the attacheddrawings for the detailed description of the present disclosure areprovided.

Referring to FIG. 1 through FIG. 11 , the present disclosure provides apaper dispenser comprising a base 10, a paper dispensing portion 1 and acover 20. The paper dispensing portion 1 has two support members 12, 13and a paper dispensing unit 11. The paper dispensing unit 11 has atleast an auxiliary roller 112, 113, a paper dispensing roller 111, aswing unit 114 and a paper dispensing cutter 115. Referring to FIG. 14 ,the paper dispenser of this embodiment is exemplified by two auxiliaryrollers 112, 113. An increase in the number of the auxiliary rollers112, 113 can enhance the efficiency of delivery of paper 91 and thusprevent a paper jam. Each auxiliary roller 112, 113 and the paperdispensing roller 111 press against each other to clamp and deliver aroll 9 of paper 91. A paper delivery surface 1112 of the paperdispensing roller 111 and paper delivery surfaces 1122, 1132 of theauxiliary rollers 112, 113 are made of rubber to thereby increase thefriction required for the delivery of the paper 91. The paper dispensingroller 111 has a receiving groove 1113. The receiving groove 1113extends in the axial direction of the paper dispensing roller 111 andhas a V-shaped transverse cross section parallel to the radial directionof the paper dispensing roller 111. The swing unit 114 has two swingarms 1141 and a cutter holder 1144. Two ends of each swing arm 1141 eachhave a pivotal connection unit 1142 (for example, pivotal connectionaxle) and a guide unit 1143 (for example, guide axle). Two sides of thecutter holder 1144 are connected to the swing arms 1141, respectively,and between the pivotal connection unit 1142 and the guide unit 1143 ofeach swing arm 1141, respectively. The paper dispensing cutter 115 isfixed to the cutter holder 1144 and is serrate. The pivotal connectionunits 1142 of the swing arms 1141 are pivotally connected to two sidesof the paper dispensing roller 111, respectively, and disposed on thesame side of the receiving groove 1113. Referring to FIG. 9 through FIG.11 , the pivotal connection units 1142 of the swing arms 1141 arepivotally connected to the upper side of the receiving groove 1113. Theswing unit 114 enables the paper dispensing cutter 115 to swing betweenthe inside and outside of the receiving groove 1113. The support members12, 13 each have a roll resilient positioning unit 125, 135 (forexample, resilient positioning post), a pivotal connection unit 121, 131(for example, a droplet-shaped post with a pivotal connection hole 1211,1311) and a cam guide grooves 122, 132. The roll resilient positioningunits 125, 135 resiliently extend and retract relative to the supportmembers 12, 13 to position the central hole (shown in FIG. 1 and FIG. 14) of the roll 9 in place, respectively. The pivotal connection units121, 131 of the support members 12, 13 are droplet-shaped posts witharcuate cross sections. The cam guide grooves 122, 132 surround thepivotal connection units 121, 131 of the support members 12, 13,respectively, from outside and are closed. Two sides of the paperdispensing roller 111 are pivotally connected to the pivotal connectionholes 1211, 1311 at the front ends of the pivotal connection units 121,131 of the support members 12, 13, respectively, through a pivotalconnection unit 1111 (for example, pivotal connection axle). The guideunits 1143 of the swing arms 1141 are movably disposed at the cam guidegrooves 122, 132 of the support members 12, 13, respectively. Thepivotal connection units 1121 (for example, pivotal connection axles) atthe two ends of the auxiliary roller 112 are pivotally connected to thepivotal connection units 123, 133 (for example, pivotal connectionholes) of the support members 12, 13, respectively. The pivotalconnection units 1131 (for example, pivotal connection axles) at the twoends of the auxiliary roller 113 are pivotally connected to pivotalconnection units 124, 134 (for example, pivotal connection holes) of thesupport members 12, 13, respectively. The rear sides of the bottoms ofthe support members 12, 13 are pivotally disposed at the base 10. Thecover 20 is pivotally disposed at the base 10 and has a paper dischargehole 203. The cover 20 covers the base 10. The paper dispensing portion1 is disposed between the cover 20 and the base 10.

Referring to FIG. 14 , when a user pulls the paper 91, the paperdispensing roller 111 is driven by the paper 91 and thereby rotatescounterclockwise. Referring to FIG. 9 through FIG. 13 and FIG. 15 , theguide units 1143 disposed on the two sides of the swing unit 114 move tothe rears of the cam guide grooves 122, 132 via the tops of the camguide grooves 122, 132 under the guidance of the wall surfaces of thetwo sides of the cam guide grooves 122, 132 of the support members 12,13, respectively, such that the guide units 1143 on the two sides of theswing unit 114 move away from the pivotal connection units 1111 on thetwo sides of the paper dispensing roller 111, respectively, therebyallowing the paper dispensing cutter 115 to cut and form a line ofperforations (not shown) in the paper 91. Then, the user pulls the paper91 to get the paper 91; meanwhile, the paper dispensing roller 111 isdriven by the paper 91 and thus keeps rotating counterclockwise. Theguide units 1143 on the two sides of the swing unit 114 move to thefronts of the cam guide grooves 122, 132 via the bottoms of the camguide grooves 122, 132 under the guidance of the wall surfaces of thetwo sides of the cam guide grooves 122, 132 of the support members 12,13, respectively, such that the guide units 1143 on the two sides of theswing unit 114 approach the pivotal connection units 1111 on the twosides of the paper dispensing roller 111, respectively, thereby causingthe paper dispensing cutter 115 to retract and return to its initialposition.

Therefore, the paper dispenser of the present disclosure is advantageousin that the paper dispensing cutter 115 is integrated into the paperdispensing roller 111 to reduce the volume of the paper dispenser.Furthermore, the paper dispenser of the present disclosure is alsoadvantageous in that the base 10 has a plurality of fixing hole 105(cruciform or keyhole-shaped), such that the paper dispenser of thepresent disclosure can be mounted in place upside down in a crowdedenvironment or mounted at a spare position, so as to make good use ofspace.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , in an embodiment, the pivotalconnection units 201 (for example, pivotal connection holes) on twosides of the upper side of the cover 20 are pivotally disposed on twosides of the upper side of the base 10 by two damping axles 101,respectively. Rear sides of the bottoms of the support members 12, 13are pivotally disposed at the pivotal connection units 102 (for example,pivotal connection holes) on the two sides of the lower side of the base10 by two damping axles 126, 136, respectively. The cover 20 and thepaper dispensing portion 1 rotate in opposite directions. For example,the cover 20 rotates counterclockwise, whereas the paper dispensingportion 1 rotates clockwise, such that the roll 9 of the paper dispenserof the present disclosure can be easily mounted in place. When the cover20 is open, the damping axles 126, 136 prevent the instant escape of thepaper dispensing portion 1 under its weight, protecting the paperdispenser of the present disclosure against damage.

Referring to FIG. 1 , FIG. 2 and FIG. 4 , in an embodiment, an engagingunit 204 (for example, engaging hole) is disposed on the lower side ofthe cover 20 to engage with an engaging unit 104 (for example, resilientengaging button) on the lower side of the base 10. Therefore, the cover20 can be temporarily fixed to the base 10.

Referring to FIG. 1 , FIG. 2 , FIG. 4 and FIG. 5 , in an embodiment, anengaging unit 1251, 1351 (for example, engaging groove) is disposed oneach of the two sides of the upper sides of the support members 12, 13to engage with the engaging units 103 (for example, resilientsnap-engaging hooks) on the two sides of the base 10. Therefore, thepaper dispensing portion 1 can be temporarily fixed to the base 10.

Referring to FIG. 2 , FIG. 4 and FIG. 6 , in an embodiment, the supportmembers 12 each have therein an electrical processing unit 16 (forexample, a control circuit board), a driving portion 14 and a powersupply unit 17 (for example, a battery or utility power). The electricalprocessing unit 16, the driving portion 14 and the power supply unit 17of the support member 12 is covered with a cover 120. The drivingportion 14 has a driving unit 141 (for example, motor), a transmissionunit 142 (for example, a gear train) and a unidirectional gear 143. Thepower supply unit 17 is electrically connected to the electricalprocessing unit 16. The electrical processing unit 16 is electricallyconnected to the driving unit 141. The driving unit 141 is connected tothe transmission unit 142. The transmission unit 142 is connected to theunidirectional gear 143. The unidirectional gear 143 is connected to thepaper dispensing roller 111. The transmission unit 142 and theunidirectional gear 143 enable the driving unit 141 to drive the paperdispensing roller 111 to rotate in the direction of outputting the paper91 out of the paper discharge hole 203. Therefore, the unidirectionalgear 143 drives unidirectionally (counterclockwise) the paper dispensingroller 111 to rotate, so as to extend the service life of the paperdispenser of the present disclosure. Thanks to the electrical processingunit 16 and the driving portion 14, the paper dispenser of the presentdisclosure allows the paper to be pulled out manually, both manually andelectrically, or electrically, so as to meet practical user needs. Inparticular, in case of wet hands or fragile paper, the electricalprocessing unit 16 and the driving unit 141 can prevent the user fromending up pulling out a broken piece of paper.

Referring to FIG. 2 , FIG. 4 and FIG. 6 , in an embodiment, theunidirectional gear 143 is connected to a magnetic switch rotationalmember 1432. The two ends of the magnetic switch rotational member 1432each have a magnetic member 1433 (for example, a magnet). The electricalprocessing unit 16 has a magnetic sensing unit 162 (for example, amagnetic sensor) corresponding in position to one of the magneticmembers 1433. Therefore, thanks to the control exercised with theelectrical processing unit 16, the driving unit 141, the magneticsensing unit 162, and the magnetic members 1433 of the magnetic switchrotational member 1432, it is feasible for the paper dispensing roller111 to rotate by at least a half of one revolution, so as to provide anappropriate number of pieces of paper to users. When the paper dispenserof the present disclosure is not in use, a small angle and distancebetween the magnetic sensing unit 162 and the magnetic members 1433 areallowable; hence, when the user pulls the paper to drive the rotation ofthe paper dispensing roller 111 and the magnetic switch rotationalmember 1432, the magnetic sensing unit 162 can start the driving unit141 upon detection of the magnetic member 1433 right below and can shutdown the driving unit 141 upon detection of the next magnetic member1433.

Referring to FIG. 1 through FIG. 4 and FIG. 6 , in an embodiment, theunidirectional gear 143 is connected to a manually-operated rotationalmember 1431. The manually-operated rotational member 1431 is exposedfrom positioning holes 1201 of the support members 12 and a through hole205 of the cover 20. The magnetic switch rotational member 1432 isdisposed in the manually-operated rotational member 1431. Therefore, topull the paper 91 by hand, the user rotates the manually-operatedrotational member 1431, and thus the unidirectional gear 143 enables themanually-operated rotational member 1431 to drive unidirectionally(counterclockwise) the rotation of the paper dispensing roller 111,thereby allowing the paper dispensing roller 111 to output the paper 91toward the paper discharge hole 203.

Referring to FIG. 2 , FIG. 4 and FIG. 6 , in an embodiment, theelectrical processing unit 16 has a central processing unit, a memory, aprocessing circuit, an alarm (for example, a buzzer or light-emittingmember) and an infrared sensing unit 161. The cover 20 has alight-penetrable board 202. The light-penetrable board 202 enables theinfrared sensing unit 161 to sense a human hand, allowing the paperdispenser of the present disclosure to provide the paper 91 in anelectrically-driven manner. Alternatively, the electrical processingunit 16 estimates the amount of the paper 91 consumed according to thenumber of revolutions by which the driving unit 141 has rotated, so asfor the alarm to generate a warning sound or light when the paper 91 isrunning out.

Referring to FIG. 1 , FIG. 6 and FIG. 7 , in an embodiment, theelectrical processing unit 16 has a paper inadequacy informing unit 163.The paper inadequacy informing unit 163 has a roll detection unit 1631(for example, a detection rod), a link unit 1635 (for example, a linkrod) and a lift switch 1637. The roll detection unit 1631 has one endpivotally connected to a roll pressing roller 1632 for pressing againstthe roll 9 and the other end having a resilient pivotal connectionmember 1633 (for example, a resilient rotational member). The rollpressing roller 1632 and the roll detection unit 1631 are locatedoutside the support members 12. The resilient pivotal connection member1633 is located inside the support members 12. The other end of the rolldetection unit 1631 is pivotally disposed at and penetrating the supportmembers 12 so as to be connected to the resilient pivotal connectionmember 1633, such that the other end of the roll detection unit 1631 isresiliently, pivotally disposed at the support members 12. The resilientpivotal connection member 1633 has a driving hollow 1634. The link unit1635 is disposed in the support member 12. A pivotal connection junction1636 between two ends of the link unit 1635 is pivotally disposed at thesupport member 12. The link unit 1635 has one end movably connected tothe driving hollow 1634 and the other end connected to the lift switch1637. The lift switch 1637 is electrically connected to the processingcircuit of the electrical processing unit 16 and disposed in the supportmember 12. Therefore, owing to the resilient pivotal connection member1633, the roll pressing roller 1632 resiliently presses against the roll9. The lesser the paper 91 of the roll 9 is, the smaller the diameter ofthe roll 9 is. As shown in FIG. 7 , the resilient pivotal connectionmember 1633 drives the roll detection unit 1631 to rotate clockwise, andthe driving hollow 1634 of the resilient pivotal connection member 1633rotates clockwise to drive the movement of one end of the link unit1635, such that the link unit 1635 rotates counterclockwise, allowingthe other end of the link unit 1635 to press against the lift switch1637. When the roll 9 is running out of paper, the lift switch 1637causes the alarm to generate a paper inadequacy alert.

Referring to FIG. 8 , in an embodiment, the support members 13 each havetherein an auxiliary driving portion 15. The auxiliary driving portion15 has a gear 151, a stop arm 152 and a resilient unit 153 (for example,an extension spring). A cover 130 of the support member 13 covers theauxiliary driving portion 15. The gear 151 is connected to the paperdispensing roller 111 and has a plurality of bevel gears 1511 and apivotal connection unit 1531 (for example, a pivotal connection axle).The two ends of the resilient unit 153 are disposed at the pivotalconnection unit 1531 of the gear 151 and the fixing unit 1532 (forexample, a hook member) of the support member 13, respectively. The twoends of the stop arm 152 have a stop end 1521 and a resilient pivotalconnection unit 1522 (for example, a pivotal connection member with atorsion spring), respectively. The resilient pivotal connection unit1522 is pivotally disposed at the support members 13 to drive the stopend 1521 to stop between the bevel gears 1511, and thus the paperdispensing roller 111 rotates in the direction of discharging the paperout of the paper discharge hole. Referring to FIG. 8 , the stop arm 152enables the gear 151 and the paper dispensing roller 111 to rotateclockwise only. Therefore, when the user pulls the paper, the paperdispensing roller 111 of gear 151 of FIG. 8 rotates clockwise, thepivotal connection unit 1531 of gear 151 rotates clockwise, moves andstretches the resilient unit 153 to store resilient energy. After a lineof perforations has been formed on the paper, the resilient unit 153 isstretched to attain its maximum length. Then, the resilient unit 153shortens and releases the resilient energy, and in consequence thepivotal connection unit 1531 pulls and causes the gear 151 and the paperdispensing roller 111 to keep rotating clockwise, so as to assist thepaper dispensing roller 111 in delivering the paper to users.

Referring to FIG. 9 through FIG. 11 , in an embodiment, two sides of thepaper dispensing roller 111 have a pivotal connection unit 1114 (forexample, pivotal connection groove) and a fixing frame 1116,respectively. The pivotal connection units 1114 of the paper dispensingroller 111 are disposed on the upper side of the receiving groove 1113.The pivotal connection units 1142 of the swing arms 1141 are pivotallydisposed at the pivotal connection unit 1114 of the paper dispensingroller 111 and fastened to the fixing unit 1115 (for example, a fixinghole) of the paper dispensing roller 111 by the fixing unit 1117 (forexample, a fixing hole) of the fixing frame 1116 with bolts for the sakeof positioning. Therefore, the swing unit 114 can be easily mounted onthe paper dispensing roller 111.

Referring to FIG. 4 and FIG. 5 , FIG. 9 through FIG. 11 , in anembodiment, the paper dispensing portion 1 has a cover 117 and apositioning frame 116. The cover 117 and the positioning frame 116 aredisposed between the support members 12, 13; in particular, the cover117 is disposed on the front side of the paper dispensing roller 111.The pivotal connection units 1171 (for example, pivotal connectionaxles) on two sides of the cover 117 are pivotally connected to andengaged with the pivotal connection units 128, 138 (for example,engaging grooves) on the inner sides of the support members 12, 13,respectively. The engaging units 1172 (for example, resilient engaginghooks) on the two sides of the cover 117 are engaged with the engagingunits 129, 139 (for example, engaging holes) on the inner sides of thesupport members 12, 13. Therefore, the user can open the cover 117 torepair the swing unit 114 and the paper dispensing cutter 115. Thefixing units 1161 (for example, fixing holes) on the two sides of thepositioning frame 116 are fixed to the fixing units 127, 137 (forexample, fixing posts) on the inner sides of the support members 12, 13,respectively. The auxiliary rollers 112, 113 and the paper dispensingroller 111 are disposed at the positioning frame 116. Therefore, thepositioning frame 116 prevents a paper jam.

Referring to FIG. 2 and FIG. 4 , FIG. 14 and FIG. 15 , in an embodiment,the cover 117 has an auxiliary roller 1173. The auxiliary roller 1173and the paper dispensing roller 111 press against each other to clampand deliver the paper 91. Therefore, the auxiliary roller 1173 of thecover 117 allows the paper 91 to discharge paper toward the paperdischarge hole 203 precisely in order to prevent a paper jam.

While the present disclosure has been described by means of specificembodiments, numerous modifications and variations could be made theretoby those skilled in the art without departing from the scope and spiritof the present disclosure set forth in the claims.

What is claimed is:
 1. A paper dispenser, comprising: a base; a paperdispensing portion having two support members and a paper dispensingunit, with the paper dispensing unit having at least an auxiliaryroller, a paper dispensing roller, a swing unit and a paper dispensingcutter, wherein the auxiliary roller and the paper dispensing rollerpress against each other to deliver a roll of paper, with the paperdispensing roller having a receiving groove, with the swing unit havingtwo swing arms and a cutter holder, wherein two ends of each said swingarm have a pivotal connection unit and a guide unit, respectively,wherein two sides of the cutter holder are disposed at the swing arms,respectively, and between the pivotal connection unit and the guide unitof each said swing arm, wherein the paper dispensing cutter is disposedat the cutter holder, and the pivotal connection units of the swing armsare pivotally disposed on two sides of the paper dispensing roller,respectively, and on the same side of the receiving groove, wherein thepaper dispensing cutter swings between an inside and an outside of thereceiving groove, wherein the support members each have a roll resilientpositioning unit, a pivotal connection unit and a cam guide groove, withthe pivotal connection unit being arcuate, with the cam guide groovesurrounding the pivotal connection unit and being closed, wherein twosides of the paper dispensing roller are pivotally disposed at the sameend of the pivotal connection units of the support members,respectively, wherein the guide units of the swing arms are movablydisposed at the cam guide grooves of the support members, respectively,wherein the auxiliary roller is pivotally disposed between the supportmembers, and the support members are disposed at the base; and a coverpivotally disposed at the base, having a paper discharge hole, andcovering the base, with the paper dispensing portion being disposedbetween the cover and the base.
 2. The paper dispenser of claim 1,wherein a side of the cover is pivotally disposed on a side of the baseby two damping axles, and a side of each said support member ispivotally disposed on an opposing side of the base by a damping axle,wherein the cover and the paper dispensing portion rotate in oppositedirections, wherein another side of the cover has an engaging unitengaged with an engaging unit on another side of the base, whereinanother side of each said support member has an engaging unit engagedwith an engaging unit of the base.
 3. The paper dispenser of claim 1,wherein one of the support members has an electrical processing unit, adriving portion and a power supply unit, with the driving portion havinga driving unit, a transmission unit and a unidirectional gear, with thepower supply unit being electrically connected to the electricalprocessing unit, with the electrical processing unit being electricallyconnected to the driving unit, with the driving unit being connected tothe transmission unit, with the transmission unit being connected to theunidirectional gear, with the unidirectional gear being connected to thepaper dispensing roller, wherein the driving unit drives, through thetransmission unit and the unidirectional gear, the paper dispensingroller to rotate in a direction of outputting the paper out of the paperdischarge hole.
 4. The paper dispenser of claim 3, wherein theunidirectional gear is connected to a magnetic switch rotational member,wherein two ends of the magnetic switch rotational member each have amagnetic member, with the electrical processing unit having a magneticsensing unit corresponding in position to one of the magnetic members.5. The paper dispenser of claim 3, wherein the unidirectional gear isconnected to a manually-operated rotational member exposed from thesupport members and the cover.
 6. The paper dispenser of claim 3,wherein the electrical processing unit has an infrared sensing unit, andthe cover has a light-penetrable board, allowing the infrared sensingunit to sense a human hand through the light-penetrable board.
 7. Thepaper dispenser of claim 3, wherein the electrical processing unit has apaper inadequacy informing unit having a roll detection unit, a linkunit and a lift switch, with the roll detection unit resilientlypivotally disposed at the support members and having a driving hollow,with the link unit having two ends flanking pivotally the supportmembers, wherein the link unit has an end movably connected to thedriving hollow and another end connected to the lift switch.
 8. Thepaper dispenser of claim 1, wherein one of the support members has anauxiliary driving portion having a gear, a stop arm and a resilientunit, with the gear being connected to the paper dispensing roller andhaving a plurality of bevel gears and a pivotal connection unit, whereintwo ends of the resilient unit are disposed at the pivotal connectionunit and the support members of the gear, respectively, where two endsof the stop arm have a stop end and a resilient pivotal connection unit,respectively, wherein the resilient pivotal connection unit is pivotallydisposed at the support members to drive the stop end stopping betweenthe bevel gears, and thus the paper dispensing roller rotates in adirection of outputting the paper out of the paper discharge hole. 9.The paper dispenser of claim 1, wherein two sides of the paperdispensing roller have a pivotal connection unit and a fixing frame,respectively, wherein the pivotal connection unit of the paperdispensing roller is on the same side as the receiving groove, whereinthe pivotal connection units of the swing arms are pivotally disposed atthe pivotal connection units of the paper dispensing roller andpositioned in place by the fixing frame.
 10. The paper dispenser ofclaim 1, wherein the paper dispensing portion has a cover and apositioning frame, wherein the cover and the positioning frame aredisposed between the support members, wherein the auxiliary roller andthe paper dispensing roller are disposed at the positioning frame, withthe cover disposed on a front side of the paper dispensing roller andhaving an auxiliary roller for pressing against the paper dispensingroller, so as to deliver the paper.